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| author | Takashi Iwai <tiwai@suse.de> | 2006-03-24 14:53:41 +0000 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2006-03-24 14:53:41 +0000 |
| commit | 09c5db44a4665eac7dd658291bb2fd5d85e469d7 (patch) | |
| tree | c8701c7f203423a1197fe53059fbeccd58a80675 /src/pcm/pcm_direct.c | |
| parent | 1a9c520529b9f56f46b38671838b2a870f083c13 (diff) | |
| download | alsa-lib-09c5db44a4665eac7dd658291bb2fd5d85e469d7.tar.gz | |
Fix noisy output of dmix with two periods
Fixed the noisy output of dmix with two (or less) periods.
The dmix tends to give noise or XRUN when running with two periods
because of its implementation nature. To avoid this, the start
position is aligned to the period size, so that the updates are synced
with interrupts of slave PCM.
Diffstat (limited to 'src/pcm/pcm_direct.c')
| -rw-r--r-- | src/pcm/pcm_direct.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/pcm/pcm_direct.c b/src/pcm/pcm_direct.c index 81544889..74475707 100644 --- a/src/pcm/pcm_direct.c +++ b/src/pcm/pcm_direct.c @@ -713,8 +713,11 @@ int snd_pcm_direct_hw_refine(snd_pcm_t *pcm, snd_pcm_hw_params_t *params) int changed; do { changed = 0; + /* Set min/max size to [2:1024] since INT_MAX as the + * upper-limit results in a too big buffer on some apps. + */ err = hw_param_interval_refine_minmax(params, SND_PCM_HW_PARAM_PERIODS, - 2, INT_MAX); + 2, 1024); if (err < 0) return err; changed |= err; |